Developer Tool
HTTP Cache Explainer
Analyze HTTP caching behavior across browser, CDN, and proxy layers with minimal header fixes
Cache Analysis
Enter a URL or paste headers and click "Analyze Cache"
Get instant cache behavior analysis
Cache Layers Explained
Browser Cache
- Respects max-age
- Can cache with cookies
- Supports immutable
- Private by default
CDN Cache
- Prefers s-maxage
- Needs public for auth
- Avoids Set-Cookie
- Supports stale-while-revalidate
Proxy Cache
- Similar to CDN
- Shared cache rules
- Respects Vary header
- Must-revalidate support
Changelog
v1.0.0August 21, 2025
Initial Release
- • Multi-layer cache analysis (Browser, CDN, Proxy)
- • Cache-Control directive parsing with TTL calculations
- • Header-based cache behavior prediction
- • Platform-specific fix generation (Express, Nginx, Cloudflare)
- • Cache lint detection with severity levels
- • Goal-based optimization suggestions
- • Support for ETag, Last-Modified, and Vary headers
- • Authentication and cookie impact analysis
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Quick Tips
- All processing happens in your browser
- Your data never leaves your device
- No registration or login required
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